CMT 285.640.10 Heavy-Duty General Purpose Saw Blade by CMT is a 10-inch, 40-tooth circular saw blade engineered for demanding ripping and crosscutting across a wide range of wood-based materials. Fitted with a Hi-ATB 30 deg. tooth geometry and a 12 deg. hook angle, this blade delivers clean, consistent results whether you are breaking down hardwood lumber, softwood, plywood, veneered panels, melamine, or chipboard. Designed to perform on miter saws, slide miter saws, stationary table saws, and portable table saws, it covers the most common workshop cutting tasks without switching blades.

Key Features

• Hi-ATB 30 deg. Tooth Grind - the High Alternate Top Bevel configuration at 30 deg. slices wood fibers cleanly on both rip cuts and crosscuts, reducing tear-out and leaving smoother edges compared to standard ATB profiles.
• 40-Tooth Count - balances cut quality and feed rate, making it effective for general-purpose heavy-duty work without clogging or excessive heat buildup.
• 12 deg. Hook Angle - provides an aggressive yet controlled bite into material, supporting efficient stock removal during heavy-duty cuts on hardwood and softwood alike.
• 0.126 in. Kerf Thickness - a full-kerf body that offers stable tracking through dense materials such as thick hardwood and chipboard, minimizing blade deflection under load.
• 0.087 in. Plate Thickness - a robust steel body that resists flex and vibration during heavy-duty cuts, contributing to straighter, more accurate results.
• 5/8 in. Bore Diameter - fits the standard arbor size used on the majority of miter saws, table saws, and portable circular saws, making this a versatile drop-in replacement.
• 7,600 Maximum RPM Rating - supports use on high-speed stationary and portable table saws, allowing full machine performance without exceeding safe operating limits.
• Hardmetal (HW) Tooth Material - carbide-tipped teeth hold an edge longer through abrasive materials like melamine and chipboard, extending the interval between sharpenings.

Why This Product

• One blade for rips and crosscuts - the Hi-ATB 30 deg. geometry handles both cutting directions cleanly, reducing the need to swap blades when switching between ripping lumber and making crosscuts in plywood or veneered panels.
• Built for demanding materials - the hardmetal carbide teeth and full-kerf 0.126 in. body are sized for heavy-duty work on chipboard, melamine, and dense hardwoods that wear lighter blades quickly.
• Broad machine compatibility - a standard 5/8 in. bore and a 7,600 RPM rating make this blade compatible with stationary table saws, portable table saws, miter saws, and slide miter saws, so it moves between machines without adapters.
• Designed for consistent performance - the 0.087 in. plate and 12 deg. hook angle work together to maintain a stable, accurate cut line even during sustained heavy-duty use in a production or job-site environment.

Specifications

• Manufacturer Part Number: 285.640.10
• Brand: CMT Orange Tools
• Diameter: 10 in.
• Bore Diameter: 5/8 in. (15.88mm)
• Number of Teeth: 40
• Tooth Grind Type: Hi-ATB 30 deg.
• Hook Angle: 12 deg.
• Kerf Thickness: 0.126 in.
• Plate Thickness: 0.087 in.
• Maximum RPM: 7,600
• Tooth Material: HW (Hardmetal Carbide)

Approved Applications

• Heavy-duty general purpose cutting
• Ripping - hardwood and softwood
• Crosscutting - hardwood and softwood
• Cutting plywood and veneered panels
• Cutting melamine
• Cutting chipboard

Compatible Machines

• Miter saw
• Slide miter saw
• Stationary table saw
• Portable table saw

Frequently Asked Questions

What is the difference between Hi-ATB and a standard ATB tooth grind?

A standard ATB grind alternates bevel angles between adjacent teeth. The Hi-ATB grind uses a steeper bevel - in this case 30 deg. - which creates a more aggressive slicing action on wood fibers. This results in cleaner edges on both rip cuts and crosscuts, particularly important when working with veneered plywood and melamine where tear-out is a common concern.

Will this blade fit my miter saw or table saw with a 5/8 in. arbor?

Yes. The bore diameter is 5/8 in. (15.88mm), which is the standard arbor size used on the vast majority of miter saws, slide miter saws, stationary table saws, and portable table saws. Always confirm your machine's arbor size and maximum RPM rating before mounting any blade.

What is the maximum safe operating speed for this blade?

The maximum rated speed is 7,600 RPM. Never operate the blade above this rated speed. Always verify that your machine's no-load RPM does not exceed the blade's maximum RPM rating before use.

Can this blade cut melamine and chipboard without excessive chipping?

Yes. The Hi-ATB 30 deg. tooth geometry is well suited for composite and coated sheet materials such as melamine and chipboard. The carbide hardmetal (HW) tooth material resists the abrasive properties of these materials, and the slicing action of the bevel grind helps minimize chipping on the cut face.